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08-12-2009, 02:06 AM

the owl

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New member with a question?

Hey all, ive wandered here from ls1tech. Just a curious question though. Whats the compression ratio of a stock 5.3 with the stock 5.3 heads milled .030 ? Thanks a bunch guys

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08-12-2009, 02:11 AM

A Low Dime

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I think stock 5.3 is 9.4:1. Milled .030 heads makes it 10:1

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08-12-2009, 08:16 AM

trever1t

2nd fastest 5.3 ECSB

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DEPENDS on which 5.3!!!

Some are ~9.5 and some are 9.9:1

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08-12-2009, 11:27 AM

the owl

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Its an lm7 out of a 99 silverado

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08-12-2009, 11:44 AM

trever1t

2nd fastest 5.3 ECSB

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~9,5 then

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